Textile spool



June 12, 1945. A'TWQQD 2,377,919

TEXTILE SPOOL Filed Sept. 16, 1941 2 Sheets-Shut 1 m ENTOR June -12,1945. R. ATWOOD 2,377,919

TEXTILE SPOOL 'Filed Sept. 16, 1941 2 Sheets-Sheet 2 5 e5 Z a8 3 ii mligV INVENTOR A RNEYS g Patented June 12, 1945 'rnrcrrm: SPOOL DawsonAtwood, New York, N. Y., assignor to Decorated Metal ManufacturingCompany, Inc., Broo lyn, N. Y., a corporation of New York ApplicationSeptember 16, 1941, Serial No, 411,001

15 Claims.

This invention relates to improvements in textile spools.

It is an object of the invention to provide a pim, or single flangedspool of the type used for winding textile fibres produced by spinningmachines,

, of low weight and cost, permitting it to be used as a shipping packageif desired. Many features of the invention are applicable also to driventextile p ls and to cops, tubes, bobbins and textile spools in general.

It iska further object of the invention to provide a com te spoolstructure. fabricated of sheet metal "and cardboard parts and havingcharacteristics" of strength, accuracy and durability heretofore notobtainable with such methods of fabrication.

With these and other objects which will appear in the following fulldescription in mind, the invention consists in the combinations andarrangements of parts and details of construction which will now firstbe fully described in connection with the accompanying drawings, andthen pointed out more particularly in the appended claims In thedrawings:

Fig. 1 is an exploded view in central longitudinal section, showing theparts for a pirn embodying the invention in a preferred form;

Fig. 2 is a central longitudinal section of the assembled pim;

Fig. 3 is a transverse section, taken on the line 3-3 of Fig. 2

Figs. 4 and 5 are, respectively, top and bottom end views of the pirn ofFig. 2;

Fig. 8 is a central longitudinal section of certain parts of a modifiedpim also embodying the invention in preferred form and differing fromthe embodiment of Figs. 1 to 5 principally in the axial fastening of themembers;

Fig. 'l ishan exploded view showing the parts of Fig. 6 together withadditional parts going to make up a completed pim;

Fig. 8 is a central longitudinal section of a completely assembled pirncomposed of the parts showninFigs. Band '7;

Fig. 9 is a top view of the pirn of Fig. 8;

Fig. 10 is a horizontal cross section of the barrel of the pirn of Fig.8 taken on the line III-I0;

Fig. 11 is an enlarged view of a portion of the lower part of Fig. 8;

Fig. 121s a horizontal section taken on the line II-II ofFis. .11: and

Fig. 13 isja fragmentary view in central longl- I end construction whichmay be substituted for that shown in Fig. 8.

Referring now to Fig. 1, the pim comprises an outer barrel I preferablymade-of pasteboard tubing, which may, if desired, be impregnated withphenolic resin and baked so as to harden it and improve its surfacecharacteristics. Positioned within the outer barrel I is a sheet steelreinforcing torque tube 2 in the form of an open butt seam tube andcarrying fastening tabs 3 at its lower end to permit fastening to theend flange assembly.

' l is provided and will preferably be positioned tudinalsectionshowinga modified form of upper with its seam out of alignment with that of thetube 3, or opposite thereto, where accurate balancing is desired. Asuitable number of cup shaped expanders or transverse braces 5 (hereshown as two) is positioned within the tube 4 and these braces 5 areformed with central apertures 8 to accommodate a central eyelet or rivetI extending substantially the length of the barrel assembly. As will beunderstood, the apertures B will'normally be large enough to provideclearance for the rivet l, facilitating construction and assembly ofparts.

The driving or flange end assembly of the pim comprises the fasteningcap member 8 and driving cap member 9, together with liner element III.Both members 8 and 9 are formed of relatively heavy steel; the former isap rtured, as at II, to receive the tabs 3 of the torque tube 2; and thelatter is formed with a key shaped driving recess Or aperture I2 adaptedto receive the key of a spinning machine spindle, the aperture I2, inthis case, being shown as of such shape as to fit one of the usual formsof driving lug.

The upper end assembly comprises a washer I3, made of fibre or similarmaterial, which forms a narrow flange for retaining the material uponthe pim and furnishes a smooth concentric surface for winding andunwinding, and a sheet metal fastening cap I l, as shown.

In assembling, the barrel assembly is built up as indicated, the innerand outer split metal tubes 2 and 4 being placed within the outer barrelI and the expanders I being driven in to force tubes 2 and 4 firmlyagainst the barrel I. This operation will expand the outer barrel I intosuitable cylindrical form, removing any distortions which may bepresent. This result is preferably achieved by expanding tubes 2 and 4into a closer than drivin fit within barrel I, forcing the latter toconform closely to the contour of the outer surface of tube 1. Member 8is fastened to the barrel by means of tabs 3, and liner III is nowplaced in position,

the collar being rolled into barrel I flush therewith. Cap l4 and washerl3 are now positioned at the top of the barrel, rivet l is inserted andits ends turned over as shown. Assembly is comleted by placing drive cap9 within fastening cap 8 and turning over the rims of cap 8 and liner las -shown in Fig. 2. The cylindrical portions of members 8 and I4 serveas end braces, similarly to the intermediate braces 5.

As will be apparent from the foregoing description, the pirn of thepresent invention possesses a number of advantages over prior artconstructions, and this is particularly true in connection withsynthetic fibres such as rayon, nylon or the like. Important featuresare barrel strength, surface and concentricity and security of flangefastening both axially and angularly. In the present construction, theouter barrel, in addition to being fastened to the driving flangeassembly by the center rivet 1, is also held axially by the outer splitmetal tube 2 and its lugs or tabs 3, due to the pressure of tube 2against the outer barrel I. Angular movement of the barrel withreference to the drive flange assembly is prevented by tube 2, providinga very solid construction.

Concentricity and dynamic balance are insured by the construction asdescribed, as follows: cap l3, due to its cylindrical portion whichextends Within tube 2 as indicated is positioned accurately withreference to the barrel assembly, and, in turn, positions the upper endof rivet I so that barrel I will be concentric about a spindle extendingthrough this rivet; flange I3 is likewise positioned concentrically bycap l4 fitting within an annular groove therein, as shown; at the driveend, the parts are positioned in a similar way by fastening cap 8, and,with particular reference to drive cap 9, it may be noted that thismember is positioned by means of its outer edge and as a result of aturning or stamping operation, but that concentricity and balance arereadily obtained without sacrificing simplicity and economy ofmanufacture. Thus, positioning of the members for concentricity isobtained with reference to tubes 2 and 4 by forming parts l3, I4, 8 and9 symmetrically or concentrically, part 9 being positioned only withreference to the concentric rim of the flange member 8. As a result. itis found that the pirn of the invention, when placed upon a whorl withthe usual spindle extending through aperture l2 and rivet 1 and thedrive key or lugs engaged in aperture |2, will operate satisfactorilywithout objectionable vibration or winding difficulties at speeds ofabout 8000 R. P. M.,-even with modern synthetic fibres. For use withwhorls having the general form of the aperture l2 as shown in thedrawing, the circular central portion of the aperture will preferably belarger than the whorl so that aperture l2 engages only the lugs of thewhorl. Also, as will be understood, the lower surface of plate 9, ratherthan plate 8, serves to support the pirn. For use with whorls ofdifferent forms, the aperture 2 may be modified in shape so as toconform thereto.

The embodiment illustrated in Figs. 6 to 12 differs from that of Figs. 1to 5, previously discussed, in the elimination of a central eyelet orother central fastening member, and the substitution therefor of animproved fastening means in alinement with the inner surface of thehollow barrel.

There is provided, as before, a hollow outer barrel 2|, similar to thebarrel I previously referred to, and within which is positioned a splitmetal tube 22. This tube is turned over at its ends 23, however, insteadof being formed with tabs. Positioned within tube 22 is a split tube 24having tabs 25 at its lower end and which is expanded by the annular orcup shaped braces 26.

The drive end assembly includes a fastening plate 21 similar to theplate 8 previously described except that its central portion consistsmerely of an upturned rim 28 surrounding a circular aperture whichreceives the tube 22 and to which the tube 22 is secured by turning overits end 23. The small end assembly includes a washer 29, as before, butwhich accommodates a ring 30, which is angular in cross section and overwhich the other end 23 of the tube 22 is turned. A cap member 3| isprovided at the lower end and comprises a cylindrical body portion 32adapted to be driven into the tube 24, and apertures 33 receiving thetabs 25. The periphery of the cap 3| is formed with a skirt or flange 34to cover the end 23 of the tube 22, and which may be in abuttingrelation thereto, and the central portion is formed with an aperture 35forming a spindle bearing. The drive end assembly is completed by adrive plate 36 and liner 31,. which parts are similar to correspondingparts 9 and HI previously described and are related to fastening plate21 in the same way as the parts 9 and I0 are related to fastening plate8, and hence require no further description.

At the upper end, a cap member 38 is provided, fitting within tube 24and having its rim 39 turned over the upper end 23 of tube 22. This capmember is provided with a spindl bearing 40 similar to that of capmember 3|.

The assembly of this modified form of pirn includes the formation of thesub-assembly of Fig. 6 by placing the parts shown in the figure togetherand turning over the ends 23 of tube 22, as described, the position ofthese ends before turning being indicated in the flgure by dotted lines.Tube 24 is now inserted, expanders 26 are driven into place and capmembers 3| and 38 are lll) fastened on by means of tabs 25 and rim 39.The remainder of the assembly, resulting in the completed pirn of Fig.8, is the same as previously described in connection with the pirn ofFigs. 1 to 5.

An important feature of the invention according to this embodiment ofFigs. 6 to 12 inclusive consists in the form of fastening tab employed.As best seen from Figs. 8, l1 and 12, the tabs 25 are relatively broad:in the example illustrated, in which the spool barrel may be about oneand one half inches in outside diameter, these tabs are about fivesixteenths of an inch in width and each tab accordingly occupies about30 of arc. Instead of merely being turned over in the customary way thetabs are bent flat as they pass over the adjacent edges of apertures 33so that at the location indicated by the letter X in Figs. 11 and 12 thebent portion lies substantially in a plane at right angles to thecylindrical elements of the tube 24. Putting this differently, thesection of Fig. 11 may be considered as a typical section taken anywhereacross the entire width of the tab in contradistinction to usual tabconstructions in which the tab, if it is in contact, or substantially incontact, with an edge over which it is bent at one point, will typicallybe bulged away from it at others. At the location indicated by theletter Y in Figs. 11 and 12, the base portion of the tab and theunderlying body of the tube 24 are cylindrical. The tip or end Z of thetab acme 1a is bent down against the inner cylindrical surface 22 of thecap 4| and forced into the cylindrical shape shown in the figures. Aswill be observed, when one surface (say the outside) of the tab isconsidered, the portion Y is cylindrical and convex, the portion 1! liessubstantially in a plane at right angles to the cylindrical elements andthe portion Z is cylindrical and parallel to the portion Y but isconcave. The base and tip portions of the tabs, accordingly. conformclosely to the opposite surfaces of cylindrical portion 22, while theintermediate portions X of the tab conform closely to a plane includingthe edge of aperture 33. It is of course impossible to bend a tab intothe form shown without very considerable deformation and flowing of themetal and this fact is utilized to obtain a security of fastening notachieved by prior art tab constructions, due to the fact that it is notpossible to separate the parts by simply unbending the 'tabs. so thatthe construction can be pulled apart only by reversing the deformationof the metal involved in the original stamping operation. In prior arttab constructions, having in mind the width of the tab and thickness ofmetal in comparison with the radius of the edge around which it is bentand the bending methods employed. the deformation of the tab is veryslight so that the tab can be restored approximately to its originalcondition prior to bending over by what is substantially a mere bendingoperation. In the tab of the invention, however, this condition nolonger obtains and the tab must be twisted very considerably or actuallytorn in order to straighten it out so as to permit separation of theparts fastened by it.

The plrnof Fig. 6 and following has considerable advantages in certainfields of use over the pirn of Fig. 5. In the first place? the spindlewill be engaged in the barrel of the pirn only by the end cap bearing25, which permits easier and more accurate centering than is possiblewith a center eyelet. As will be understood, the transverse cup shapedbraces 28 have openings sumciently large so that they do not engage thespindle. A second advantage of this pirn construction consists in itsgreater strength due to the fastening of the drive end to the barrel inalignment with tubes 22 and 24, which eliminates the unfavorableleverage of the end flanges under pressure, which is encountered with acentral eyelet construction. Greater strength is also obtained by reasonof the fact that the ends are fastened to the barrel around the entireperiphery of tube 22 by means of its overturned ends 23 acting directlyon fastening plate 21 and ring 30 and the drive end is also fastened onby the tabs 2! on tube 24 acting through the cap 3|. The tubes 22 and 24are forced against the barrel as before by the intermediate braces 24and also by the end caps II and 38. The parts are fastened togetherangularly, as distinguished from axially, both by means of the turnedover ends 23 and the tabs 25, and the tight frictional fit of the outersurface of tube 22 within the outer barrel 2| which effectively preventsany turning.

The construction of Figs. 6 to 12 will ordinarily be found to fasten thedrive and to the barrel with sumcient security, despite the lack of anyfastening of the upper end of tube 24, due to the great holding power ofthe friction between the split metal tubes and outer barrel. The upperend construction is desirable in that it involves no roughness orprojectin parts. Where, however, even greater strength is required theupper end construction may be modified. as shown in of the upper end oftube 24 results in a construction which is the same as that of the lowerend, previously described, no further explanation of the modification ofFig.- 13 is necessary.

Aswill be understood, many of the features of constructions which havebeen described are ap plicable to textile spools or the like havingspool ends or flanges at both ends of the barrel or to flangeless pirnsor tubes. My application filed of even date herewith and disclosingfiangeless tube constructions involves a number of features which are incommon with the disclosure of the present application and containsclaims to features of barrel construction and reinforcement which areapplicable generally to flanged or flangeless constructions.

What is claimed is:

i. In a textile spool, and in combination, a tubular outer barrel, areinforcement assembly within said barrel, the' said assembly comprisinginner and outer split metal tubes positioned with the splits thereofopposite each other and means within said inner split metal tube forexpanding said tubes against the inner surface of said outer barrel, adrive end for said spool, and fastening means for attaching said driveend to said reinforcement assembly.

2. A textile spool according to claim 1, in which said fastening meanscomprises end members fitting within said inner split'metal tube, meansfastening said end members together in abutting relation to said innerspilt metal tube and means fastening one of said end members to saiddrive end and to said. outer split metal tube against relative rotation.

3. A textile spool according to claim 1, in which said fastening meanscomprises end members sur rounding and'fastened to said outer splitmetal tube and further end members fastened to said inner split metaltube in abutting relation to said first mentioned end members and tosaid outer split metal tube.

4. In a textile spool, and in combination, a barrel, an end for saidbarrel, and fastening means for attaching said end to said barrel, thesaid fastening means comprising a plurality of relatively wide metaltabs attached to said barrel, a metal portion of said end having acylindrical portion and substantially coplanar apertures disposedadjacent to said cylindrical portion, the said tabs passing through saidapertures, the bases thereof conforming closely to one surface of saidcylindrical portion, the tips thereof conforming closely to the othersurface of said cylindrical portion, and the intermediate portionsthereof being substantially coplanar and conforming closely to the edgesof said apertures.

5. A textile spool according to claim 4, in which the said barrelcomprises a tubular outer barrel of pasteboard or similarly deformablematerial and a tubular metallic reinforcement for and extending throughsaid outer barrel, and the said tabs are formed upon said tubularmetallic reinforcement.

6. A textile spool according to claim 4, in which the said barrelcomprises a tubular outer barrel of pasteboard. or similarly deformablematerial,

. an expansible tubular metallic reinforcement for along said barrel forexpanding said tubular metallic reinforcement against the inner surfaceof said outer barrel and including the said cylindrical portion.

7. In a textile spool, and in combination, a tubular barrel; spindlebearings within said barrel adjacent its ends, an end member fittingwithin said barrel, concentric with and carrying one of said spindlebearings, an end flange surrounding said end member and having a rimconcentric therewith, a drive member having a rim fastened to said endflange rim and having means for seating upon and engaging the lugs of awhorl, and an anti-thread-trapping liner extending along said barrelfrom said flange and covering the inner surface of said flange, the saidliner and flange rim and drive member rim being turned over together tofasten the same together.

8. In a textile spool, and in combination, a tubular outer barrel, areinforcement assembly within said barrel, the said assembly comprisinginner and outer split metal tubes and means within said inner splitmetal tube for expanding said tubes against the inner surface of saidouter barrel, a drive end for said barrel, means fastening said driveend to said barrel against axial separation, and means fastening saiddrive end to means comprising tabs upon said outer split metal tube andcorresponding apertures upon said drive end for fastening said drive endto said outer split metal tube against relative rotation.

10. In a textile spool, and in combination, a tubular outer barrel,inner and outer metal tubes fitting within said barrel and extendingbeyond the same, an annular spool flange member surrounding said tubesand seated upon said outer barrel, the said outer tube having an endturned over outwardly over said flange member to fasten the same to saidouter barrel, an end cap abutting against the said turned over end,fitting within said inner tube and having apertures in alinementtherewith, and said inner tube having tabs passing through saidapertures to fasten said cap member to said inner tube.

11. A textile spool according to claim 10, in which said cap member isformed with a spindle bearing.

12. A textile spool according to claim 10, in which said flange membercomprises a rim concentric about said outer metal tube, and comprisingalso a drive end member having means for engaging the lugs of a spindleand means fastening said drive end member to the rim of said flangemember.

13. A textile spool according to claim 10, in which said cap member isformed with a spindle bearing and said flange member comprises a rimconcentric about said outer metal tube, and comprising also a drive endmember having means for engaging the lugs of a spindle and meansfastening said drive end member to the rim of said flange member.

14. In a textile spool and in combination, a tubular outer barrel ofpasteboard or similarly deformable material. a tubular metallicreinfcrcement fitting therein under pressure sufficient to compel saidouter barrel to conform closely to the outer surface of said tubularmetallic reinforcement, spindle bearings and means for fastening saidbearings to said outer barrel concentrically to said tubular metallicreinforcement, a drive end, and means fastening said drive endconcentrically to said tubular metallic reinforcement.

15. A textile spool according to claim '14, in which the said tubularmetallic reinforcement comprises an outwardly expansible assemblyconfined throughout the length of said outer barrel only by said outerbarrel.

RAWSON A'I'WOOD.

